A to Z list of common illnesses and conditions including their symptoms, causes and treatments.

The meaning of ILLNESS is sickness. How to use illness in a sentence.

Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic.

Mar 7, 2025 · A disease is something a physician can diagnose, and an illness is something you feel. Think a disease and an illness are the same thing? An internal medicine physician …

WebMD Symptom Checker is designed with a body map to help you understand what your medical symptoms could mean, and provide you with the trusted information you need to help …

In humans, disease is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person affected, or similar problems for …

Some patients present with falls as a manifestation of acute illness, and falls are one of the classically described atypical presentations of acute illness in old age.

Disease and illness are often used interchangeably, but they have distinct differences. Disease refers to a specific medical condition or disorder that affects the normal functioning of the body. …

Find out about health conditions, including their symptoms and how they're treated.

Viral infections are any illness you get from a virus (a small germ that uses your cells to reproduce). Examples include the flu, colds, COVID-19 and HPV.